Human infestation of the swallow bug Oeciacus hirundinis (Hemiptera: Cimicidae) was confirmed in an apartment complex in the suburbs of Tokyo. Source of the bugs were nests of house martin Delichon dasypus attached to the outer wall. Swallow bugs were successfully eradicated from the room by applying heat and pesticide treatment for bedbugs. Bugs could be kept under captivity by feeding fetal mouse twice a month. We experimentally confirmed infestation by O. hirundinis. This report is the first confirmed human infestation and eradication case of the swallow bug in Japan. Since house martins are a common migratory bird in Japan, potential cases of human infestation may not be rare. In the future, it will be necessary to investigate bedbugs and their prevention, for preventing recurrence and identifying the kind and the nest building of the outside bird.